Agricultural implement



y 7, 0- c. w. KELSEY AGRICULTURAL IMPLEMENT Filed Oct. 20, 1958 mid/slyHQJ WVF" ATTOR EYS w M a4, ,3

IIIIIII I li l l l g -30 against undue shock UNITED STATES PATENT OFFIC2,199,954 AGRICULTURAL IMPLEMENT Cadwallader W. Kelsey, Troy, N. Y.

Application October 20, 1938, Serial No.

Claims.

This invention relates to a new andimproved method of rotary tilling,and particularly the extreme stresses both of a lateral and directnature to which the tools .are sub- 10 jected in operating over hardclay, rocky or other diflicult soil conditions. Today metal springs aremost generally used for tool mountings. Owing to the nature of thismaterial and the limited spring action, destructive forces are set up.Parl5 ticuiarly the rapid and destructive rebound which springs andtools.

It is an object 01 the present invention to provide a tool holder whichis adequately guarded and strain, and which is flexible both in lateraland axial directions and which does away altogether with the high speeddestructive rebound. I

It is another object to provide a tool mounting of this character inwhich shocks or strains to which the tool may be subjected are nottransmitted through to the source.

Still another object is that of providing a tool mountingwhich may rowwidths and at the same time be suitable for operation over most unevenground conditions.

object is to. provide a tool holder extremes of soil conditions and toprovide for difl'erent depths of tillage.

A still further object is that of providing a tool mounting of this typewhich may be produced in quantity at low cost, and which may be readilyreplaced, 'if necessary, with the expenditure of a minimum of time andeffort.

With these and other objects in mind. reference is had to the attachedsheet of drawings, in which: 1

Fig. 1 is a side elevation of one type-of rotary tiiling machineemploying tool holders embody- 5 ing myinvention;

Fig. 2 is a plan view of a'tool holder of the type shown in Fig. 1, andembodying one form of my invention;

- ,Fig. 3 is a cross-sectional view of the holder shown in Fig. 2, takenalong the line 3-3 in that driving shaft or motive figure and looking inthe direction of the arrow;

Fig. 4- is a further cross-section of tool mountings shown in Fig. 3,

Fig. 5 is a cross-section in fragment and taken through a modified formof tool holder embodying my invention parallel to the axis thereof; and

along the lines 6-6 of Fig. 5 in the direction of the arrow.

Turning now to Fig. 1, we have a source of motive power 5, which maytake the form of an internal combustion engine or any other desirablemotive source, which in turn is mounted on a frame or chassis 6. Thischassis likewise mounts driving wheels 1 by means of an axle or shaft 8,to which is likewise secured a driving pulley 9, which is connectedthrough the belt l0 and the gears H-i2 to the source of motive power. Ahandle represented in fragment at l3 may likewise be provided, as wellas a further drive belt l4, coupled to the source of motive 0 power atone end and a further driving pulley H at the opposite end of thechassis. This latter pulley is mounted on a suitableshait l6 carried bythe chassis, to which is also coupled a further driving pulley ll. Abelt l8 couples this last named pulley with a shaft I! by means of theV-belt pulley 20, as shown in Fig. 4. Also as is shown in Fig. 4 toolholders 2|, Ila and Zlb are mounted on the shaft l9 and spaced axiallyfrom one another, and each may hold,. for example, as shown in toolholder 2|, cutting tool members 23 and 24, which may be bolted' in thesockets 25 and 26 by means of bolts." and 28. By providing two partedthrough a gear chain or other suitable means. Likewise. the preciseshape of the tool 55 holders 2!, Ma and 2l b might be modified to hold agreater or lesser number of tools.

Each tool holder is provided with a peripheral flange 29, 29a and 2%,respectively, at the inner edge of the outer portion of the tool holder.This in turn is vulcanized or in other fashion bonded to a rubber orother flexible material ring 30, 30a and 30b, which again is in turnbonded to an inner flange 3|, 31a and 31b, carried by the hub member 32,32a and 32b, of the tool holder. The hub member of each tool holder isprovided with a flange portion indicated at 33, 33a and 33b,respectively, which is secured to the driving shaft, for example, bymeans of pins 34, 34a and 34b, which pass through aligned openings inthe flanges and driving shaft.

As will be noted in Fig. 4 the tool holders may be mounted so that theflange which engages the driving shaft extends either to the right orthe left, for example, tool holder 2| has a flange portion 33 extendingto the right hand side of the body of the tool holder, whereas, theflange portions 33a and 33b extend to the left of the bodies of theirrespective tool holders.;gf.-This interchangeable mounting of eachindividual tool holder provides means whereby the spacing betweencenters of adjacent tool holders canbevaried at will and is extremelydesirable in adjusting the apparatus for use in cultivating differenttypes of farm produce or the like.

In operation, it is apparent that, depending on the conditionsencountered, the shaft l9 may be provided with any suitable number oftool mounting members axially aligned thereon, and as the shaft rotates,carrying the tool holders with it, the rubber ring 30 allows the toolmembers to be displaced or distorted laterally as well ascircumferentially of said tool holder. This is extremely useful in usingthe machine in stony soil where the stones or boulders may be of suchlarge size as to be immovable, in which case this resilient constructionallows sumcient time to elapse before the tool reaches the extremeelastic limit, thus allowing the tilling unit tobe lifted over theobstruction without damaging tools, holder or the machine itself. It isquite often the case that a lateral displacement of the tool membersthrough the elasticity or resilience of the tool mount here disclosed issumcient to allow the rock or boulder to be straddled and the machinecan continue uninterruptedly in its tilling operation.

It will be observed that as disclosed in Fig. 4, the cross-section ofthe rubber ring portion 30 discloses concavities in either edge, asshown at 35. This allows a compression of the rubber ring at either edgeduring a sidewise displacement of thetool member without causing unduewear on'the ring or excess of gathering at that point and protects theresilient portion from the abrasive action of the soil or small stones.

Turning now to Figs. 5 and 6, it may in some instances be desirable tosoconstruct the tool holder that the outer ring, which is shown at 36, bemade mountable with respect to the hub member 31. To this end, both thehub member and the outer tool holding ring may, for example, be formedwith serrated peripheries 38 and 39, in the case of the hub member suchperiphery being, of course, the outer periphery, while in the case ofthe tool holder the inner periphery is serrated. Cooperating with theseserrated edges is the resilient ring 40, carrying the inner metallicband 4| and an outer metallic of tool holders 2la. and Nb band 42, whichare in turn correspondingly serrated to engage the serrations 38 and 39.These metallic members 4| and 42 are bonded to the resilient portion 40by vulcanizing or other suitable process to form a unitary structure. Inaddition, the .tool holder 36 is provided with an internal peripheralgroove 43, and underlying such groove is a corresponding externalperipheral groove in the ring 42, which is shown at 44. Correspondinggrooves in the internal peripheral surface of the metallic ring 4| andthe external periphery of the hub member 3! (not shown) can be provided.Riding in such complementary groove portions 43 and 44 may be, forexample, a spring member 45 of uneven or even contour, which is sodesigned as to maintain an expanding pressure when in position.Accordingly, such spring member 45 forms a key between the serrations 39and their complement on the metallic ring 42 to prevent sidewise motionof the tool holder with respect thereto.

Should it be desired to remove the tool holder I for replacement. thespring member 45 is depressed through peripheral openings 46 in the toolholder, through which any suitable tool may be inserted. The depressionof the spring member, so that the serrated peripheral edges of theadjacent ring will clear one another, will permit of a sidewise movementof the tool holder with respect to the remainder of the disk. In likemanner, the resilient ring 40 car be removed from the hub portion 31.Such expedient will permit of ready replacement of damaged portionswithout the necessity of shop lay-up for the machine involved, and willprove most useful in actual practice.

It is, of course, apparent that the precise de- Sign and structureheredisclosed might be subject to extensive modification andrearrangement without in the least departing from the spirit of myinvention.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

l. A tool mount for use in rotary tillage comprising a disk adapted foraxial mounting on a driven shaft, a resilient ring permanently securedto the peripheral edge of said disk, and a further metallic ringpermanently secured to the outer peripheral edge of said resilient ring,said last named ring being formed with tool receiving socket portions.

2. A tool mount for use in rotary tillage, comprising a metallic disk, ahub portion associated therewith and extending to one sideof the same, aresilient ring permanently united with the peripheral edge of said disk,and a further metallic ring permanently united to the outer peripheraledge of said resilient ring, said last named ring being formed with toolreceiving socket portions.

3. A tool mount'for use in connection with rotary tillage comprising, ametallic disk to be coupled to a driven shaft, said disk being formedwith a laterally extending flange portion at its peripheral edge, aresilient ring permanently united to said flange portion and ofsubstantially equal width therewith, and a further flange por' tionpermanently united to the outer peripheral edge of said resilient ring,said last named flange portion being formed-with tool receiving socketportions.

4. A tool mount for use in connection with ro tary tillage comprising, ametallic disk to be coupled to a driven shaft, said disk being formedwith a laterally extending flange portion at its peripheral edge, aresilient ring permanently united to said flange portion and orsubstantially equal width therewith, a further flange portionpermanently united to the outer peripheral edge of said resilient ring,said last named flange portion being formed with tool receiving socketportions, and means associated with said socket portions for adjustablyholding said tool members at various depths in said socket portions.

5. A tool mount for use in connection with rotary tillage comprising, ametallic disk, a hub portion associated therewith and positioned to oneside thereof, aflange portion associated with the peripheral edge ofsaid disk and extending laterally with respect thereto, a resilient ringpermanently united with said flange portion and extending beyond thesame, and a further flange portion permanently united to said resilientring at its outer peripheral edge, said resilient ring being ofsubstantially equal width with said fla'nge portions at its points ofconnection therewith but presenting concave side walls between saidpoints of connection.

6; A tool mount for use in connection with rotary tillage comprising, ametallic disk, a hub portion associated therewith and positioned to oneside thereof, a flange portion associated with the peripheral edge ofsaid disk and extending laterally with respect thereto, a resilient ringpermanently united with said flange portion and extending beyond thesame, a further flange porlaterally with -'respect thereto, a resilientring.

permanently united with said flange portion and extending beyond thesame, a further flange portion permanently united to said resilient ringat its outer peripheral edge, said resilient ring being of substantiallyequal width with said ,flange portions at its points of connectiontherewith but presenting concave side walls between said points ofconnection, tool receiving socket portions carried by said outer flange,and means associated with said tool receiving socket portions forholding tool members therein at varying depths within said socketportions.

8. A tool mount for use in connection with rotary tillage, comprising ametallic disk to be coupled to a driven shaft, a resilient ring adaptedto be removably positioned about the peripheral edge of said disk, and atool holding ring also adapted to be removably positioned about theperipheral edge of said resilient ring, said last named ring having toolreceiving sockets in its peripheral edge.

9. A tool mount for use in connection with ro- .tary tillage comprisinga hub portion for association with a driven shaft, an annular tool mountfor association therewith and a resilient ring interposed between saidhub and said annular tool mount and fastened to each 01' the same,whereby rotation of said driven shaft will efiect a yielding rotation ofsaid tool mount.

10. A tool mount for main connection with rotary tillagecomprising a hubportion for association with a driven shaft, an annular tool mount forassociation therewith, a resilient ring. interposed between said hub andsaid annular" tool mount and fastened to each of the same;

whereby rotation of said driven shaft will eifect a yieldin rotation ofsaid tool mount, and tool receiving socket portions carried by said toolmount and means associated with said tool receiving socket portions forholding tool members therein at varying depths within said socketportions.

CADWALLADER. W. KELSEY.

